The overall structure of the feed water pump adopts the structure of a double-shell barrel core-pulling pump. The feed water pump of this structure has high reliability, few leakage points, convenient installation, maintenance, disassembly and assembly, and simplicity.
The design of horizontal and double-shell integral core package and the large end cover integrated with the core package facilitate the integral assembly and disassembly of the core package and can realize the shortest shutdown overhaul time;
Rigid rotor, compact structure greatly shortens bearing span, small static deflection of rotor, low L/D ratio and high reliability;
The inner hole of the sealing ring with parallel throttling grooves not only maintains the hydraulic rigidity of the smooth bushing, but also increases throttling resistance, effectively preventing abrasion and occlusion;
Pure balance drum structure completely eliminates the possibility of axial contact between static and dynamic parts;
The special structure at the inlet of the throttling bush of the balancing drum effectively reduces the damage of vortex to the pump, greatly improves the static rigidity of the fluid in the gap, and at the same time, the inner hole with the reverse spiral groove is processed to minimize leakage;
Four-oil wedge bearing has better anti-vibration capability; Large size thrust bearing can bear overload load.
The impeller and balance drum equipped with hot sleeve are adopted to eliminate the leakage of liquid between the shaft and the two.
Speed: 5366 r/min
Best efficiency point efficiency: 86%
Optimal efficiency point flow: 1846 t/h
Head of the best efficiency point: 3420 m
Flow range: 1200-2200 t/h
Head range: 4200-2360 m
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